<template>
  <div>
    <!-- 三级分类 -->
    <Category :scene="scene"></Category>
    <el-card style="margin: 10px 0px;">
      <!-- v-if|v-show:都可以实现显示与隐藏 -->
      <div v-show="scene == 0">

        <el-button @click="addSpu" type="primary" size="default" icon="Plus"
          :disabled="categoryStore.C3Id ? false : true">添加SPU</el-button>
        <el-table style="margin: 10px 0px;" border :data="records">
          <el-table-column label="序号" type="index" align="center" width="80px"></el-table-column>
          <el-table-column label="SPU名称" prop="spuName"></el-table-column>
          <el-table-column label="SPU描述" prop="description" show-overflow-tooltip></el-table-column>
          <el-table-column label="SPU操作">
            <template #="{ row, $index }">
              <el-button type="primary" size="small" icon="Plus" title="添加SKU" @click="addSku(row)"></el-button>
              <el-button type="primary" size="small" icon="Edit" title="修改SPU" @click="updateSpu(row)"></el-button>
              <el-button type="primary" size="small" icon="View" title="查看SKU列表" @click="findSku(row)"></el-button>
              <el-popconfirm :title="`你确定删除${row.spuName}?`" width="200px" @confirm="deleteSpu(row)">
                <template #reference>
                  <el-button type="primary" size="small" icon="Delete" title="删除SPU"></el-button>
                </template>
              </el-popconfirm>

            </template>
          </el-table-column>
        </el-table>

        <!-- 分页器 -->
        <el-pagination v-model:current-page="pageNo" v-model:page-size="pageSize" :page-sizes="[3, 5, 7, 9]"
          :background="true" layout="prev, pager, next, jumper,->,sizes,total" :total="total"
          @current-change="getHasSpu" @size-change="changeSize" />


      </div>
      <!-- 添加spu|修改Spu -->
      <SpuForm ref="spu" v-show="scene == 1" @changeScene="changeScene"></SpuForm>
      <!-- 添加sku的子组件-->
      <SkuForm ref="sku" v-show="scene == 2" @changeScene="changeScene"></SkuForm>
      <!-- dialog对话框：展示已有的SKU数据 -->
      <el-dialog title="SKU列表" v-model="show">
        <el-table border :data="skuArr">
          <el-table-column label="SKU名字" prop="skuName"> </el-table-column>
          <el-table-column label="SKU价格" prop="price"> </el-table-column>
          <el-table-column label="SKU重量" prop="weight"> </el-table-column>
          <el-table-column label="SKU图片">
            <template #="{ row, $index }">
              <img :src="row.skuDefaultImg" style="width: 100px;height: 100px;">
            </template>

          </el-table-column>


        </el-table>
      </el-dialog>
    </el-card>
  </div>

</template>

<script setup lang="ts">
import type { HasSpuResponseData, Records, SkuInfoData, SkuData } from '@/api/product/spu/type'
import { ref, watch, onBeforeUnmount } from 'vue';
import { reqHasSpu, reqSkuList, reqRemoveSpu } from '@/api/product/spu';
//引入分类的仓库
import useCategoryStore from '@/store/modules/category';
import type { SpuData } from '@/api/product/spu/type'
import SpuForm from './spuForm.vue';
import SkuForm from './skuForm.vue';
import { ElMessage } from 'element-plus';
let categoryStore = useCategoryStore()

// 场景数据
let scene = ref<number>(0);
// 分页器默认页码
let pageNo = ref<number>(1);
// 每一页展示几条数据
let pageSize = ref<number>(3);
// 存储已有SPU总个数
let total = ref<number>(0)
// 存储已有的Spu的数据
let records = ref<Records>([])
// 获取子组件实例SpuForm
let spu = ref<any>()
// 获取子组件实例
let sku = ref<any>()
//存储全部的SKU数据
let skuArr = ref<SkuData[]>([]);
let show = ref<boolean>(false);
// 监听三级分类Id 的变化
watch(() => categoryStore.C3Id, () => {
  // console.log(123)
  //当三级分类发生变化的时候清空对应的数据
  records.value = [];
  //务必保证有三级分类ID
  if (!categoryStore.C3Id) return;
  getHasSpu()
})



//此方法执行:可以获取某一个三级分类下全部的已有的SPU
const getHasSpu = async (pager = 1) => {
  //修改当前页码
  pageNo.value = pager;
  let result: HasSpuResponseData = await reqHasSpu(pageNo.value, pageSize.value, categoryStore.C3Id);

  //  console.log(result)
  if (result.code == 200) {
    records.value = result.data.records;
    total.value = result.data.total;
  }
}
// //分页器下拉菜单发生变化的时候触发
const changeSize = () => {
  getHasSpu();
}

// 添加新的SPU按钮的回调
const addSpu = () => {
  // 切换为场景1；添加与修改已有SPU结构->SPUform
  scene.value = 1;
  //点击添加SPU按钮，调用子组件方法初始化spu数据
  spu.value.initAddSpu(categoryStore.C3Id)

}
// 修改已有的SPU的按钮回调
const updateSpu = (row: SpuData) => {
  // 切换为场景1；添加与修改已有SPU结构->SPUform
  scene.value = 1;
  // console.log(row)
  console.log(spu.value)
  // 调用子组件实例方法获取完整已有的SPu的数据
  spu.value.initHasSpuData(row);
}

// 子组件SpuForm绑定自定义事件：目前是让子组件通知父组件切换场景为0
const changeScene = (obj: any) => {
  //子组件Spuform点击取消变为场景0:展示已有的SPU
  scene.value = obj.flag;
  if (obj.params == 'update') {
    //更新留在当前页
    getHasSpu(pageNo.value);
  } else {
    //添加留在第一页
    getHasSpu();
  }
}

// 添加SKU按钮的回调
const addSku = (row: SpuData) => {
  // console.log(123)
  // 点击添加SKU按钮切换场景为2
  scene.value = 2
  // 调用子组件的方法初始化添加SKU的数据
  sku.value.initSkuData(categoryStore.C1Id, categoryStore.C2Id, row);
}

//查看sku列表的数据
const findSku = async (row: SpuData) => {
  let result: SkuInfoData = await reqSkuList((row.id as number));
  // console.log(result)
  if (result.code == 200) {
    skuArr.value = result.data
    // 对话框显示出来
    show.value = true
  }
}

// 删除已有的SPU按钮的回调
//删除已有的SPU按钮的回调
const deleteSpu = async (row: SpuData) => {
    let result: any = await reqRemoveSpu((row.id as number));
    if (result.code == 200) {
        ElMessage({
            type: 'success',
            message: '删除成功'
        });
        //获取剩余SPU数据
        getHasSpu(records.value.length > 1 ? pageNo.value : pageNo.value - 1)
    } else {
        ElMessage({
            type: 'error',
            message: '删除失败'
        })
    }
}

//路由组件销毁前，情况仓库关于分类的数据
onBeforeUnmount(() => {
    categoryStore.$reset();
})

</script>

<style lang="scss" scoped></style>
